Autolite Iridium XP XP5144 Spark Plug for Ignition Wire Secondary

Iridium XP Spark Plug Autolite XP5144
Autolite Iridium XP spark plugs are engineered with an iridium-enhanced fine-wire and a proprietary, platinum ground electrode, to increase durability*, while its tapered ground wire maximizes engine efficiency, delivering improved engine performance, fuel efficiency, acceleration, and ignitability.

Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
Includes a lifetime limited warranty that guarantees optimum performance equal to OE designed plugs.
Engineered with an Iridium-enhanced center electrode and fine-wire design that increases ignitability and provides a more focused ignition for improved engine performance.
Its proprietary platinum ground electrode provides increased durability* and resistance to wear, extending the life of the plug.
The tapered ground wire improves engine ignitability.
Its high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength while preventing flash-over.

Center Electrode Design: Machined Fine Wire
Center Electrode Tip Material (Inch): Iridium
Ground Electrode Tip Design: Tapered
Ground Electrode Tip Material: Platinum
Hex Size (Inch) : 5/8
Thread Diameter (Millimeter): 14
Reach (Inch): 0.809
Seat Type: Tapered
Pre-Gap Size (Inch): 0.054
Manufacturer Heat Range: 9
Resistance (Ohm): 4000
Center Electrode Projection: Long Projection
Terminal Type: Non Removable Nut